AIPMT MAINS2010Botany-Genetics

AIPMT MAINS 2010 Botany Monohybrid Cross MCQ Question

Type: MCQ-conceptual-Medium-Class 12

In Antirrhinum two plants with pink flowers were hybridized. The F₁ plants produced red, pink and white flowers in the proportion of 1 red, 2 pink and 1 white. What could be the genotype of the two plants used for hybridization? Red flower colour is determined by RR, and white by rr genes.

A

rrrr

B

RR

C

Rr

D

rr

Correct Answer

Option C

Detailed Explanation

The F₁ generation shows a 1:2:1 ratio of red:pink:white, indicating a heterozygous cross (Rr x Rr).

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